Spark-arrester



; sains@ rara THOMAS REANEY, OF PHILADELPHIA, PENNSYLVANIA, ASSIGNOR-TO JOHN NAGLEE, OF

SAME PLAGE.

SPARK-ARRESTER.

Speccation of Letters Patent No. 1,447, dated December 28, 1839.

To all whom t may concern Be it known that I, THOMAS REANEY, of the Northern Liberties, in the county of Philadelphia and State of Pennsylvania, have 'invented an Improved Apparatus for Arresting the Sparks which Ordinarily Escape from the Flues of Locomotives and Other Steam Engines; and I do hereby declare that the following is a full and exact description thereof.

In the accompanying drawings, Figure l is a vertical section through axis of the smoke pipe or flue, of a locomotive steam engine, drawn on a scale of an inch to the foot; and Fig. 2 is a top view of the same.

A, is a flanch for attaching the pipe to the smoke box, the lirst section, B, of which pipe is in the form of the frustuin of a cone, and from the upper end of this section the part C, rises cylindrically, and this is surmounted by the section, D, which diverges or fiares out, from its lower to its upper end, terminating at, a a, and constitut-ing what I denominate the inner pipe. The upper section of this pipe by its flaring out, diffuses the draft consisting of the air and escape steam around and over the whole area of the interior of the hood or cap F F. From the point, b b the inner pipe is incased or surrounded by an exterior pipe, E, E, which unites with it at its lower part, at or near the junction of the sections B and C, of said interior pipe. The exterior pipe, E, E, is in t-he form of the frustum of a cone, which supports a cylindrical hood or cap, F, F. rlhe top of this hood or cap is covered by a plate of metal C C C, Fig. 2, and this is perforated with seven, eight or more holes which are the basis of as many cones of metal, Gr, G, Gr, G. The cones may be formed of woven wire but I prefer to make them of thin plates of metal, perforated throughout with holes in the manner of a grater, or eolander; such perforated plates having been found to answer the purpose intended in a very perfect manner, not beingy liable to derangement like the meshes of wire gauze, and being also much more durable.

In an apparatus of the kind and size described I have used eight such perforated cones, the center cone at its upper, or open end is eleven inches in diameter and twenty one inches deep to its angular point orapex. The seven surrounding cones are eight inches face much larger than could possibly loe obtained by three or four cones without making the cap inconveniently large and sacrilicing much of the utility o-f the instrument.

In addition to the perforations through the cones, I in general also make similar perforations around the upper edge of the hood or cap; and I surround this perforated part of the cap, with a rim which rises above the edge of said cap. This rim is shown at Z Z Fig. l. The perforations covered by this rim afford a considerable increase of the surface for the escape of the draft 'and waste steam. The rim, (Z, d, may rise to the height of three or four inches above the top plate of the cap-and this height I have found it advantageous to increase by means of an additional open cylinder, say of eighteen inches or two feet more or less in height, which cylinder may be lowered when necessary in passing under bridges by attaching it to a rock shaft or by making use of any of the other known devices used in sliding chimneys. H, H is a representation of such a cylinder which is suiiiciently large to slide` down over the rim ci d of the cap F, F.

The ashes from the detained sparks will fall down into the space E E between the inner and exterior pipes and may at any time be removed therefrom through a suitable door slide or shutter for that purpose. Such receptacles for ashes and openings have been used in other spark-arresters and are well known.

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I am aware that the top or covering of a cap or hood has been made of wire gauze in the form of asingle inverted cone or curved segment of a hollow sphere; but it is not possible with a single cone to obtain sufficient escape surface for the draft. I do not therelfore claim the merely giving to the covering 'cap7 for the purpose of giving suioient surface for the passage iof the draftthrough the perforations, orvmeshesof such Vcones.

2. I also Claim in Combination' with a number of cones arranged and perforated as `described the perforating of the upper portion of the sides of the hood or cap, said per orations being surrounded by a rim ret-ir ing from said hoodvo'r oap5 and Arising'up aboveV the upper surface of the top plate thereof, as herein fully set forth.

3. I also claim as my right," the privilege vof the manyiorms which approximate to that of a cone, such as the pyramid, frustums with small superior bases, &o.,` whichV are a modification of the frame Without afieoting` the principle.

' THOMAS REANEY.

Witnesses: JAMES REANEY, a WM. A. MORRELL; p 

